feat:fix style and change image(#429) (#430)

Author: haiminovo

src/components/chromeDownload/index.tsx

@@ -1,12 +1,11 @@
 $prefix: "dtc-chrome";
 .#{$prefix}-chrome-download {
     background: #F2F7FA;
-    margin-top: 50px;
     text-align: center;
-    overflow-y: auto;
+    overflow: auto;
     .#{$prefix}-pic-update {
-        width: 182px;
-        margin: 148px 0 17.5px;
+        width: 250px;
+        margin: 160px 0 8px;
     }
     .#{$prefix}-divide {
         margin: 80.5px 0 60px;
@@ -18,7 +17,7 @@ $prefix: "dtc-chrome";
     }
     .#{$prefix}-download {
         width: 160px;
-        margin: 0 auto;
+        margin: 0 auto 24px;
         cursor: pointer;
         .#{$prefix}-chrome-version {
             margin-top: 16.5px;